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Lana., patent No. 78,921, ma 'JW 16,1868.

IMPROVEMENT IN WIND-WHEELS.

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T0 ALL WI-IOM IT MAY CONCllItil:`

,.Be it known that I, J.' TOMAS BRAUN, of Randolph Centre, in the county of Columbia, and State of Wisconsin, have invented a new and improved Windmill; and I do hereby declare that the following is ai'ull, clear, and eizact description'thcreowhieh will enable others skilled in the-,art to make and use the sanne, reference being had to the accompanying plate Oi drawings, and to the letters' of reference marked thereon, formingipart of this specification. 4 l l i Figure lrrepresents a sectional elevation oi' my invention.

Figure 2 is a plan or top view of the sanne.

Figure 3 is. a detail side view of the brake-attachment, y

Figure 4 is a detail sectional view, to be hereinafter referred to.A

Similar letters of reference indicate corresponding parts'. Y

This invention relates to a new sclf-actingwindmill, which is so arranged thatrthe horizontal axle on which the wings or'sails are mounted has bearings on bot-h ends, thereby allowing the use Vof less clumsy apparatus, Vand doing away' with much friction. p A 'v The invention consists cliicy in the device for transferring motionl from the horizontal wingsha-ft to the horizontal driving-shaft, by which the machine to be'operated is set in motiom The said device' is so arranged that the horizontal wing-axle can turn freely around its own axis when revolved'by the wind, and also around an imaginary vertical axis when set by theW'ind. i

A represe'ntsthe framework of a building upon which my improved windmill is to lbe arranged.

, B is a horizohtalaxle, having its'hearings within thefbuilding,and carrying the driving-pulley a, as shown.

This 'axle is to receivemotion from the windmill arranged on top of' the building, and is for that purpose provided with two cranks, b and c, which are set at an angle of less than one hundred land eighty degrees, and more than ninety degrees from each other. HAs each of these cranks is connected with the driving-spindle, the

Ldeadpoint will be Overcome, and consequentzstoppagc of the machine will be avoided.

C is a stationary vertical tube, fitted through the roof' of the building, above the cranl: of the axle B, .in

such a manner as to project above the root` D, as is clearly shown in iig. 1. A ring or stationaryslecvc, r2, is

secured around this tube-C, above the reef, as shown, ands-erves as a bearing for an upright frame, E.v

.'The frame E consists of two'or morevcrticalpos'ts, e e, connected in a suitable nianncr at their'upper ends,

and set far enough apart Ato rest with their lower ends upon the ring dyand to fit around the tube C, as shown 4 in iigril.,

centre of rotation.'

In two opposite posts, e, of the frame E, are the bearings for a horizontal axle, F, said hearings heing,`

above the upper end'oi` the tube C, as showznf. v i

One end of' the shaft F extends beyond the frame E, and carries a roller,f, which rests upon an annular rail, G, secured above the roof SD, concentrically around thetube C, as is clearly shown` in iig. 2.

` The shaft F is the windmillspindlaand carries the wihgs or sails H H, vas shown.

The frame Eithus rests upon the ring d, and can be turned around tube C,tl1e laxisof whichA is its v Y It will be seen that yby extending the spindle F, and supporting its outerend by means of the rail and rollerf, its bearing'on the frame E, and tho supports of the frame E, need notY be nearly as streng and heavy as they would be if `the spindle were only supported atone end. i g ,Y

As the spindleF is revolved by the wind, it is necessary to connect it with the axle Bin Asuch a manner that the rotary motion oflthe spindle around the, axis of-thertuhc C will not inuence or strain connections, nor -retard the motion of the axle. 'l

The spindle F is'between theposts e e, provided with three cranks, h, 7i, z'. The crank c' is vertically above the centre of the tube` C, and above the crank c of the axle B, while the cranks L 7L are at the sides of the crank The cranks 7L la are arranged in line with each-other, andare set at the same angle with the crank z' as the cranks b and c are set with each other. The cranks i and c are connected by a rod, I,which is jointed at three places. y v p I The middle joint, j, is a swivel, -to allow the upper part of the rod to turn round its own axis when the spindle is set. The other joints, c 7c, are to allow for the inclined positions of the Vends of the rod during the revolutions of the cranks.-

The connecting-rod I, when arranged as described, mightperhaps be sulicient to transfer the motion from .the spindley to the axle B, but to overcome the dead-point it is advisable to provide another connection between thespindle F and the aule B, and immediately between the cranks 71.,.-L, and 5. For this purpose the lower end of a rod, J, is secured to the Vcrank b,.the rod extending to the upper end of the tube C, and having ajoint, Z, to allow the lower part of. the rod to be moved-by the crank. The upper end ofthe rod J is bifurcatcd,'and carries an annular plata-m, secured tothe tivo' upper ends of the' rod, as shown more particularly in iig. 4, which is a detail sectional View of the upper part of the tube C.

To each4 crank, 7L, is secured a rod, J/,the lower ends of both these rods being pivoted topins u a, which are fitted through a circular plate, o, and which are headed, so as to support the plate o, as is clearly shown inig. 1. The diameter of ythe plate o is larger than the inner diameter of the annular plate m, and therefore.v as the plate o is arranged under the plate m, the latter and its appendage J are supported bythe plate o. Thus the rods J and J are connected, and serve to trans-fer motion from the spindle F te the axle B. The rod I passes througha hole in the centre of the plate o, as shown. The plate 0 can turn freely underi the wing 7n, and thus a swivel is arranged in the rod J J', which allows the setting of the spindle.

The motion ofthe axle B may be retarded by means of a brake, L, which consists of a lever, j), pivoted to 4the framework of the building, of a connecting rod, 1', and of a lever, S, as is clearly shown in fig. 3 of the drawing. By depressing the end ofthe lever S, the drum or axle B will be clamped between the levers j; and

S, and wili consequently be prevented from revolving. The annular rail G can be in'ade of wood, covered with iron, orof any other-suitable material. r l

v Having thus described my invention, I claim as new, and desire to secure by Letters Patent-- 1. The device for connecting the crank b of the axle B with the cranks h z on the spindle of' a windmill, said device consisting of the jointed bifureated r rods Jt, and plate o, all made and operating substantially as described.

2. The jointed swivel-rod l, connecting the axle B with the spindle of a windmill, in combination with the jointed rod J, annular plate m, plate o, and jointed rods J u, all. made and operating substantially as herein shown and described.

' J. Tomas BRAUN.

Witnesses:

C. M. BUSH, HENRY WAGNEn.

od J and annular plate m, in combination with the jointedv 

